Hexamethylenediamine-assisted hydrothermal preparation of uniform ZnO particles and their morphology-dependent photoluminescent properties
Hexamethylenediamine-assisted hydrothermal preparation of uniform ZnO particles and their morphology-dependent photoluminescent properties
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六亚甲基二胺辅助水热制备均匀 ZnO 颗粒及其形貌依赖性光致发光性能
DOI：
10.1016/j.matchemphys.2008.12.002
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发表时间：
2009-06
影响因子：
4.6
通讯作者：
Qiao Qian
中科院分区：
文献类型：
--
作者：
Liu Yichun;Hong Xia;Shao Changlu;Wang Lingling;Zhang Xintong;Qiao Qian
采用六亚甲基二胺（HMDA）辅助水热法制备了具有椭圆形、针状和支化形貌的均匀ZnO颗粒。 ZnO颗粒的形貌简单地通过硝酸锌与HMDA的摩尔比来控制，即当[Zn2+]/[HMDA]比大于0.5时制备椭圆体颗粒，当比为0.1时制备针状颗粒，当比为0.02时制备支化颗粒。这些ZnO颗粒尽管形貌不同，但均具有结晶良好的纤锌矿结构。然而，它们表现出有趣的依赖于形态的光致发光特性，支化颗粒显示出最强烈的近带边缘紫外光致发光（PL）和最大的紫外（UV）与可见光（Vis）光致发光比率。通过考虑 HMDA 在 ZnO 颗粒生长过程中的作用来讨论这些现象。
Uniform ZnO particles with ellipsoidal, needle-like and branched morphologies were prepared by a hexamethylenediamine (HMDA)-assisted hydrothermal method. The morphology of ZnO particles was simply controlled by the molar ratio of zinc nitrate to HMDA, that is, ellipsoidal particles were prepared at a [Zn2+]/[HMDA] ratio larger than 0.5, needle-like particles were prepared at a ratio of 0.1, and branched particles were prepared at a ratio of 0.02. These ZnO particles were all of well-crystallized wurtzite structure despite of their different morphologies. However, they showed interesting morphology-dependent photoluminescent properties, with the branched particles showing the most intense near-band edge ultraviolet photoluminescence (PL) and the greatest ratio of ultraviolet (UV) to visible (Vis) photoluminescence. These phenomena were discussed by considering the role of the HMDA in the growth process of ZnO particles.
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影响因子：
4.6
作者：
J. Delaunay;Naoki Kakoiyama;I. Yamada
通讯作者：
J. Delaunay;Naoki Kakoiyama;I. Yamada
影响因子：
64.8
作者：
Tian, Bozhi;Zheng, Xiaolin;Lieber, Charles M.
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影响因子：
1.8
作者：
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通讯作者：
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影响因子：
4.6
作者：
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Y. Tong;Y. Liu;Lin Dong;L. X. Lu;Duan Zhao;J. Zhang;Y. Lu;D. Shen;X. Fan
影响因子：
1.8
作者：
J. Law;C. Boothroyd;J. Thong
通讯作者：
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